Global Patent Index - EP 2070228 A4

EP 2070228 A4 20110824 - NEURAL NETWORK FILTERING TECHNIQUES FOR COMPENSATING LINEAR AND NON-LINEAR DISTORTION OF AN AUDIO TRANSDUCER

Title (en)

NEURAL NETWORK FILTERING TECHNIQUES FOR COMPENSATING LINEAR AND NON-LINEAR DISTORTION OF AN AUDIO TRANSDUCER

Title (de)

FILTERUNGSVERFAHREN FÜR NEURONALES NETZ ZUR KOMPENSATION VON LINEARER UND NICHTLINEARER VERZERRUNG EINES TONWANDLERS

Title (fr)

TECHNIQUES DE FILTRAGE DE RÉSEAUX NEURAUX COMPENSANT LES DISTORSIONS LINÉAIRES ET NON LINÉAIRES D'UN TRANSDUCTEUR AUDIO

Publication

EP 2070228 A4 20110824 (EN)

Application

EP 07810804 A 20070725

Priority

  • US 2007016792 W 20070725
  • US 49748406 A 20060801

Abstract (en)

[origin: WO2008016531A2] Neural networks provide efficient, robust and precise filtering techniques for compensating linear and non-linear distortion of an audio transducer such as a speaker, amplified broadcast antenna or perhaps a microphone. These techniques include both a method of characterizing the audio transducer to compute the inverse transfer functions and a method of implementing those inverse transfer functions for reproduction. The inverse transfer functions are preferably extracted using time domain calculations such as provided by linear and non- linear neural networks, which more accurately represent the properties of audio signals and the audio transducer than conventional frequency domain or modeling based approaches. Although the preferred approach is to compensate for both linear and non-linear distortion, the neural network filtering techniques may be applied independently.

IPC 8 full level

H04B 15/00 (2006.01); G10L 21/00 (2006.01); G10L 21/02 (2006.01); H03G 11/00 (2006.01); H04R 29/00 (2006.01)

CPC (source: EP KR US)

H04R 3/04 (2013.01 - EP KR US); H04S 1/002 (2013.01 - KR); H04S 3/002 (2013.01 - KR); H04S 7/301 (2013.01 - EP KR US); H04S 1/002 (2013.01 - EP US); H04S 3/002 (2013.01 - EP US)

Citation (search report)

Citation (examination)

  • KLIPPEL ET AL: "Measurement and Application of Equivalent Input Distortion", JAES, AES, 60 EAST 42ND STREET, ROOM 2520 NEW YORK 10165-2520, USA, vol. 52, no. 9, 1 September 2004 (2004-09-01), pages 931 - 947, XP040507112
  • SHU-JEN STEVEN TSAI: "Power Transformer Partial Discharge (PD) Acoustic Signal Detection using Fiber Sensors and Wavelet Analysis, Modeling, and Simulation, Chapter 4", 6 December 2002 (2002-12-06), pages 35 - 42, XP055211026, Retrieved from the Internet <URL:http://scholar.lib.vt.edu/theses/available/etd-12062002-152858/unrestricted/Chapter4.pdf> [retrieved on 20150903]
  • ANONYMOUS: "Title page for XP055211026", 6 December 2002 (2002-12-06), XP055211030, Retrieved from the Internet <URL:http://scholar.lib.vt.edu/theses/available/etd-12062002-152858/> [retrieved on 20150903]
  • M.M. SAHA ET AL: "Application of ANN methods for instrument transformer correction in transmission line protection", 7TH INTERNATIONAL CONFERENCE ON DEVELOPMENTS IN POWER SYSTEMS PROTECTION (DPSP 2001), vol. 2001, 1 January 2001 (2001-01-01), pages 303 - 306, XP055194572, ISBN: 0 8-5-29-6 732 -2, DOI: 10.1049/cp:20010160

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2008016531 A2 20080207; WO 2008016531 A3 20081127; WO 2008016531 A4 20090115; CN 101512938 A 20090819; EP 2070228 A2 20090617; EP 2070228 A4 20110824; JP 2009545914 A 20091224; JP 2013051727 A 20130314; JP 5269785 B2 20130821; JP 5362894 B2 20131211; KR 101342296 B1 20131216; KR 20090038480 A 20090420; TW 200820220 A 20080501; TW I451404 B 20140901; US 2008037804 A1 20080214; US 7593535 B2 20090922

DOCDB simple family (application)

US 2007016792 W 20070725; CN 200780033702 A 20070725; EP 07810804 A 20070725; JP 2009522798 A 20070725; JP 2012243521 A 20121105; KR 20097004270 A 20070725; TW 96127788 A 20070730; US 49748406 A 20060801